/Engine/Source/Runtime/HeadMountedDisplay/Public/IMotionController.h
Returns the calibration-space orientation of the requested controller's hand.
True if the device requested is valid and tracked, false otherwise
bool GetControllerOrientationAndPosition ( const int32 ControllerIndex, const [FName](API\Runtime\Core\UObject\FName) MotionSource, FRotator & OutOrientation, FVector & OutPosition, float WorldToMetersScale ) const